Water supply system and Waterline

Waterline and water supply system are semantically related. In some cases you can use "Waterline" instead a noun "Water supply system".

Waterline noun - A line corresponding to the surface of the water when the vessel is afloat on an even keel; often painted on the hull of a ship.

Water supply system and waterline are semantically related. You can use "Water supply system" instead a noun "Waterline".